328640955 has 16 divisors (see below), whose sum is σ = 531735840. Its totient is φ = 173305088.

The previous prime is 328640941. The next prime is 328640981. The reversal of 328640955 is 559046823.

It is a cyclic number.

It is not a de Polignac number, because 328640955 - 2⁸ = 328640699 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121752 + ... + 124421.

It is an arithmetic number, because the mean of its divisors is an integer number (33233490).

Almost surely, 2^328640955 is an apocalyptic number.

328640955 is a deficient number, since it is larger than the sum of its proper divisors (203094885).

328640955 is a wasteful number, since it uses less digits than its factorization.

328640955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246270.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 328640955 is about 18128.4570496223. The cubic root of 328640955 is about 690.0923736863.

The spelling of 328640955 in words is "three hundred twenty-eight million, six hundred forty thousand, nine hundred fifty-five".